Features

• Single seal with double seal function

• Non-contacting from static to high speed condition

• Balanced

• Bi-directional

• Stationary multiple springs

Advantages

• Wear-free and contact-free operation

• Prevents the ingress of foreign particles

Operating range

Pressure: p = 5 bar (73 PSI)
Temperature: 
t = -20 °C … +200 °C (-4 °F … +392 °F)
Sliding velocity: vg = 60 m/s (197 ft/s)

Materials

Seal face: High-density carbon graphite
Seat: Ductile stainless steel with TiN-coating or silicon carbide
Secondary seals: FKM
Metal parts: CrNiMo steel

Recommended applications

• Process industry

• Single wafer cleaning systems

• Dry screw compressors

• Blowers

• Agitators

Notes

Seals from the NF941 series are used in screw compressors for special applications. They are hybrid seals that seal both aerostatically and aerodynamically. The separation gas is routed through holes in the stationary seal ring directly between the seal faces, while the lift-off is caused by specially designed gas grooves.
Dimensions on request.

Service
provide specialised design
provide processing service according to constomer's need

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